What is a prefix for bus?

There isn't one specific prefix that's universally used for "bus". It depends on the context and what kind of bus you're referring to. Here are some examples:

Types of buses:

* School bus: "School" is a prefix.

* City bus: "City" is a prefix.

* Double-decker bus: "Double-decker" is a prefix.

* Articulated bus: "Articulated" is a prefix.

Technical terms:

* Address bus: "Address" is a prefix.

* Data bus: "Data" is a prefix.

* System bus: "System" is a prefix.

Other:

* Bus route: "Route" can be considered a prefix.

* Bus stop: "Stop" can be considered a prefix.

Let me know if you have a specific type of bus in mind and I can help you find a more appropriate prefix!